As an anticoagulant citrate binds the calcium in blood that is needed for clotting.
Marble blue blood collection tube.
There are two kinds of sst tubes.
Collection tubes collection tubes for blood specimens gold red gray marble mint green green lavender light blue gray red royal blue yellow the following tables should be helpful in understanding which kind of vacuum vacutainer type tube to use in the collection of specimens.
Common blood collection tubes their additives and laboratory uses by editorial team on january 2 2020 in biochemistry hematology immunology the evacuated tube system for blood collection in use for various laboratory tests consists of tubes of various sizes with color coded tops indicating tube contents.
One tube has a gold stopper and the other has a red gray marble stopper.
Sodium citrate either 3 2 or 3 8 citrate theophylline adenosine dipyridamole ctad action.
These tubes have a clot activator on the glass and a polymer gel as the separator.
Sodium citrate 3 2 or 3 8 and ctad citrate theophylline adenosine dipyridamole.
Light blue top tube tubes with light blue stoppers shields contain two additives.
Citrate is an anticoagulant which binds calcium in the blood.
Since it is bound up the blood cannot clot resulting in a whole blood sample red blood cells and plasma.
These tubes are used to separate the blood cells from the serum.